(no commit message)

[psensor.git] / src / plib / url.c

diff --git a/src/plib/url.c b/src/plib/url.c
new file mode 100644 (file)
index 0000000..7a87adf
--- /dev/null
+++ b/src/plib/url.c
@@ -0,0 +1,75 @@
+/*
+    Copyright (C) 2010 wpitchoune@gmail.com
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+    02110-1301 USA
+*/
+
+/*
+  Part of the following code is based on:
+  http://www.geekhideout.com/urlcode.shtml
+*/
+
+#include "plib/url.h"
+
+#include <ctype.h>
+#include <stdlib.h>
+#include <string.h>
+
+char *url_normalize(const char *url)
+{
+       int n = strlen(url);
+       char *ret = strdup(url);
+
+       if (url[n - 1] == '/')
+               ret[n - 1] = '\0';
+
+       return ret;
+}
+
+char to_hex(char code)
+{
+       static char hex[] = "0123456789abcdef";
+       return hex[code & 0x0f];
+}
+
+/*
+   Returns a url-encoded version of str.
+*/
+char *url_encode(const char *str)
+{
+       char *c, *buf, *pbuf;
+
+       buf = malloc(strlen(str) * 3 + 1);
+       pbuf = buf;
+
+       c = (char *)str;
+
+       while (*c) {
+
+               if (isalnum(*c) ||
+                   *c == '.' || *c == '_' || *c == '-' || *c == '~')
+                       *pbuf++ = *c;
+               else {
+                       *pbuf++ = '%';
+                       *pbuf++ = to_hex(*c >> 4);
+                       *pbuf++ = to_hex(*c & 0x0f);
+               }
+               c++;
+       }
+       *pbuf = '\0';
+
+       return buf;
+}